Northeast Regional Reports

Native Shade Perennials for the Northeast

These pretty flowering plants brighten up low light spots and can thrive in difficult conditions

tall thimbleweed
Tall thimbleweed can thrive in the dry shade and root competition of oak tree understories.

It seems like the majority of the most popular native garden perennials are sun-loving meadow denizens. It can be difficult to find native flowering plants to brighten shadier spots. The following selection of perennials are not only vigorous shade growers, but also appeal to both people and pollinators alike, and look good while doing it.

purplish white flowers of native big-leaved aster
Big-leaved aster sports long-blooming, purplish-white flowers in summer and fall.

foliage of big-leaved aster
The plant forms a thick, glossy mat of foliage during the rest of the growing season

 

Big-leaved aster

Name: Eurybia macrophylla

Zones: 3–7

Size: 1 to 3 feet tall when in bloom; spreads quickly via rhizomes

Conditions: Partial to full shade; moist to dry soil

Native range: Eastern North America

Is it a rhizomatous, weed-smothering ground cover, or is it a midsummer- to fall-blooming, 3-foot-tall perennial? Yes. The multiple uses of big-leaved aster make it a helpful addition to the shade garden. Its leaves can be quite large—as big as your head—and they densely overlap each other, shading out most competitors. Big-leaved aster also has the distinction of being the earliest blooming eastern aster, opening its flowers as early as the first week of July. These are variable in color from white to pink to lavender. For showier flowers, select the hybrid cultivar ‘Twilight’, which is consistently blue. It’s important to consider the siting of this aster; while it does make a fine low ground cover, the flower stalks are tall, so it’s best as a background plant. It is also an aggressive spreader and can hold its own, once established, in areas where there is pressure from shade-dwelling invasives like garlic mustard (Alliaria petiolata).

 

virginia strawberry
Virginia strawberry’s cheery, bright white flowers quickly turn to tasty fruit.

Virginia strawberry

Name: Fragaria virginiana

Zones: 3–8

Size: 4 to 7 inches tall; spreads quickly via stolons

Conditions: Full sun to partial shade; moist to dry soil

Native range: Eastern North America

Reportedly, when Europeans arrived in North America, native strawberries grew “so thick that horses’ fetlocks seemed covered with blood.” Quite the image! This plant has historically been an important food source and medicinal plant for many indigenous American tribes and was grown and written about by Thomas Jefferson. This tasty little species is a distant parent to some commercial strawberry hybrids and behaves similarly in the garden, spreading with abandon via long runners. The cheerful, white flowers light up the foliage in spring, followed by small but tasty fruit in June. In dense shade, it will not fruit as abundantly, and the vibrant fall colors of its foliage will not be as rich. Either way, its attractive carpet of leaves makes it an interesting addition to the woodland garden.

 

tall thimbleweed with flowers blooming
The star-shaped blooms and textured seed heads of this anemone add interest to the back of a border, providing a height that few shade perennials can.

Tall thimbleweed

Name: Anemone virginiana

Zones: 3–8

Size: 1 to 3 feet tall and 1 to 1½ feet wide

Conditions: Full sun to partial shade; average to dry soil

Native range: Southern Canada and central and eastern U.S.

Anemone as a genus has a reputation for aggression, but this Northeast native is more well-behaved than most. In addition to remaining a calm member of the shade garden, it is drought tolerant and can do well in difficult dry shade locations, even under mature oaks (Quercus spp. and cvs., Zones 4–10), which is where I grow it. Handsome, dark green divided leaves give rise to tall, thin stems bearing small, white flowers, which develop into intriguing seed heads that give the plant its common name. Anemones are reputed to be deer resistant, but deer do browse this species in my experience, though I’ve never had it decimated. When siting this plant, keep in mind that this anemone (as well as others), gives off an allelopathic chemical that inhibits the seed germination of neighbors—but this isn’t necessarily a bad thing when it comes to weed control.

Bishop’s cap
Bishop’s cap provides a truly unique look, with fringy, snowflake-like petals emerging from yellow buds on long stalks. Photo: Doug McGrady via Flickr.com, CC BY 2.0

Bishop’s cap

Name: Mitella diphylla

Zones: 3–7

Size: 10 to 18 inches tall; spreads slowly via rhizomes

Conditions: Partial to full shade; average to moist soil

Native range: Eastern North America

Bishop’s cap seemingly stepped out of a fairy tale to grace the Northeast’s forest floors with its delicate, miniature lace flowers borne on thin stems. From a distance, its floral wands appear to hover above the tidy mat-forming foliage. In a garden setting, bishop’s cap will eventually form low drifts, best for the foreground of a woodland planting. It prefers richer, moist soils and is more commonly found in more alkaline areas of Eastern North America, but I’ve found it to be adaptable and even fairly drought tolerant. Best of all, it isn’t usually browsed by herbivores.

large flowered bellwort
While many shade plants produce white flowers, large-flowered bellwort sports big, nodding blossoms in an eye-catching shade of buttercup yellow. Photo: Sarah Jeffery

Large-flowered bellwort

Name: Uvularia grandiflora

Zones: 3–8

Size: 1 to 2 feet tall and 1 to 1½ feet wide

Conditions: Partial to full shade; average to moist soil

Native range: Eastern North America

This plant has the look of precious rarity but is actually quite easy to grow in partial to full shade and a variety of soil conditions, though it prefers richer sites. It spreads in a mild-mannered way to form colonies of bluish-green foliage resembling Solomon’s seal (Polygonatum spp. and cvs., Zones 3–8), but with charmingly droopy, large, yellow flowers. Unlike many spring-blooming native plants, the foliage of bellwort remains presentable throughout the season, and as it expands, it can help to hide the deteriorating leaves of fellow shade plants like Virginia bluebells (Mertensia virginica, Zones 3–7) or woodland poppy (Stylophorum diphyllum, Zones 4–9) when they go dormant. The other regionally native species of bellwort, sessile-leaved bellwort (Uvularia sessilifolia, Zones 4–8) and perfoliate bellwort (Uvularia perfoliata, Zones 4–9), are less ornamental, but if you can find them, they are also worth growing for their delicate and dainty appearance. Deer do find this plant palatable, which is something to keep in mind when choosing to add this unusual long-lived perennial to your garden.

While some superstar native perennials such as butterflyweed (Asclepias tuberosa, Zones 4–9) or Joe Pye weed (Eutrochium spp. and cvs., Zones 3–9) may be difficult to accommodate for those of us with predominantly shady gardens, there are still many pretty and ecologically important species available, undaunted by our sun deficit!

To discuss these plants or ask gardening questions, chat with the author on the Gardening Answers forum.

And for more Northeast regional reports, click here.

 


Chloë Bowers is a landscape designer based in Newtown, Connecticut.

Photos, unless otherwise noted: Chloë Bowers

 

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